Collapse the API surface on WebInputEvent via accessor functions.

ui/events/blink/input_scroll_elasticity_controller.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/events/blink/input_scroll_elasticity_controller.h"
 
 #include <math.h>
 
 #include <algorithm>
 
@@ skipping 93 matching lines @@
   if (helper_)
     return weak_factory_.GetWeakPtr();
   return base::WeakPtr<InputScrollElasticityController>();
 }
 
 void InputScrollElasticityController::ObserveGestureEventAndResult(
     const blink::WebGestureEvent& gesture_event,
     const cc::InputHandlerScrollResult& scroll_result) {
   base::TimeTicks event_timestamp =
       base::TimeTicks() +
-      base::TimeDelta::FromSecondsD(gesture_event.timeStampSeconds);
+      base::TimeDelta::FromSecondsD(gesture_event.timeStampSeconds());
 
-  switch (gesture_event.type) {
+  switch (gesture_event.type()) {
     case blink::WebInputEvent::GestureScrollBegin: {
       if (gesture_event.data.scrollBegin.synthetic)
         return;
       if (gesture_event.data.scrollBegin.inertialPhase ==
           blink::WebGestureEvent::MomentumPhase) {
         if (state_ == kStateInactive)
           state_ = kStateMomentumScroll;
       } else if (gesture_event.data.scrollBegin.inertialPhase ==
                      blink::WebGestureEvent::NonMomentumPhase &&
                  gesture_event.data.scrollBegin.deltaHintUnits ==
@@ skipping 290 matching lines @@
       break;
     default:
       // These cases should not be hit because the stretch must be zero in the
       // Inactive and MomentumScroll states.
       NOTREACHED();
       break;
   }
 }
 
 }  // namespace ui